coyne



S. COYNE IGNITION SYSTEM INVENTOR www4 S. COYNE IGNITION SYSTEM Dec. E, 1927.

Filed Sept. 17, 1925 2 Sheets-Sheet 2 INVENTOR ATTORN EY Patented Dec. 6, 1927.

UNirno STATES PATENT STEPHEN QOYNE,`F .NEW YQBR, N. "1T".

Ignrrron sYs'r-nn..

pplicaticn led. September make and break' mechanism are movable simultaneously to vary the horizontal planes with respect to the distributor contacts and the make and break contacts respectively, whereby to change the 'sparkingim ulses in the ignition system in accord with 't e speed 'of the engine.

Another object resides in the provisionl of a timer in which the side edges of the distributor contacts are arranged at an angle with respect to the axis of the rotation of the distributor brush, so that bvchanging the horizontal plane of said brush, will cause a variance in the time of the co-action of said brush and contacts during the rotation .of the brush. l

A. further object of the invention is to provide a means for adjusting` the tension on the distributor brush and breaker device, against the lifting action Aproduced by a .governor control mechanism, during the operation of the timer, so that the same may be accurately adjusted to a particular engine.

With these and other objects in view, the invention resides in certain novel construction and combination and arrangement of parts, the essential features of which are hereinafter fully described, are particularly pointed out in the appended claim, and are illustrated in the accompanving` drawing, in which :f

Figure 1 is a vertical sectional view through my improved automatic timer..

Figure 2 is a horizontal sectional view on the line 2-2 of Figure 1..

Figure 3 is an enlarged vertical sectional view through one of the distributor con- Figure 4 is a detail perspective view of the breaker device.

Figure 5 is a diagrammatic view of an ignition circuit with myl invention embodied 17, 1925.. serial no. 56,983,

mechanism 12 and a governorkcontrol means 13, all of which are housed within a casing 14 of insulating material, havin a removable cover or cap 15 held upon t e c sing by clips 16 swingingly mounted upon t e .casing and co-acting with shoulders 17. on -the cap. 'A rlhe device l0 is suppoorted upon the crank case 18 of. an engine, 14 thereto. as at 19. A shaft 20 extends within the crank case and haskeyed thereto a lgear 21 for constant meshingengagement with 'a gear 22er` the same diameter as the .gear 21, which gear 22is fixed to the cam shaft 23 journalled for-rotation within thev crank casing 18. y

From th foregoing description, it will be rate of speedas the 'shaft 23.- The'shaft 20 1s journaflled` within the Clower end of the casing upon anti-friction bearings 2li, to

y bolting the casingcause the same to freely rotate therein. The

outer end ofthe shaft 20 is'square in cross section as at 25, and fits within a correspondl Aingly shaped bore 26 in the lower end of a sleeve 27, which constitutes part of the governor control means 13 f 'lhe means 13 further includes -a-pair of opposed brackets 28 which extend outwardly and upwardly from the shaft 20 at the lower end,4 of the square portion 25. Brackets 28 pivotally support Il shaped arms 29,' one leg of each of which carries a weightBOwhile the other leg is formed withA an inclined face :31 for co-action with the respective rollers 32 mounted'upon the underside of a :dange 33 provided on the sleeve 27.- Springs 34 tend' to normally hold the weighted end,of

the arms 29 inwardly toward the shaft 20 as one end ofeach spring is attached to a col` lar Sle/ose'ly mounted upon the sleeve 27, while the opposite end is connected to an adj ustable member 36 carried by the upperleg of the. respective arms 29. The member 36 on each arm is held in adjusted position by a set screw 37', threadedly mounted within the arm 29; I l

rlhe top end of the sleeve 27 is formed with I teeth 38 for co-action with the toothed face 39 formed on the underside of the breaker 40 of the make and` break 4mechanism 12. The member 40vis provided on"its'periphcry with spaced angularly disposed ribs 41, there l being six of such ribs shown inthe drawings for actuating the pivoted lcontact member 42 lll) ofthe make and breakdevice. The member 42 is normally held in engagement with the stationary contact 43 by means of aspring 44, but as the breaker rotates the ribs 41 will move the member out of engagement of the stationar contact/43 six times on e-ach revolution o vthe breaker.v The make and lbe adjusted to Idispose the ribs 41 at different radial positions. It will, of course, beunderstood that the teeth. 38 and 39 prevents slipping between the breaker member and the sleeve duringv the rotation of the shaft 20.

Keyed to the shaft 48 is a distributor brush yarm 50 which `forms part of the4 distributor mechanism `11. The arm 50 is constructed of insulating material and carries -a metallic seat 51 disposed in alignment with the'axis of the shaft 20. A metal strip 52 electrically connects the seat 51 with a metallic cylinder53 mounted within the arm A`and in which cylinder i's arranged a spring structed ofinsulating material.

pressed brush 54 for' wiping engagement with rthe inner side walls of the' cap l5. Held upon the seat 51 is a conductor member 55 slidably mounted within 'a metallic sleeve 56, which is Lravided at its top end, with a wire connector 57 which extends above a manipulating head 58 also con- A spring 59 is interposed between the closed end of the sleeve land theconductor member 5 5 toy keep the member upon the seat 51. Tension 'of .the spring may be adjusted by turning the head 58 to rotate the sleeve 56 with respect to the cap, and when adjusted a'lock nut 60 threaded to the sleeve is moved 'down against the cap. The distributor mechanism 11 is arranged within the -secondary circuit '61 in which the wire leading to the secondof which are dispose ary winding of. a coil 62 is' connected with a connector. 57, from "where the current passes to the distributor brush'54 through the sleeve 56, member 55, seat51, strip 52 and cylinder 53.

Countersunk within the inner walls of the cap 15 in the path of movement of the brush 54 are spaced contact lates 63, the side edges (Pi at an angle with respect tothe axis of rotation-of the brush arm so that by changing the horizontal plane of thebrush arm, the brush will engage the contacts at various intervals during the rotation of the arm. When the brush rotates at a 'relatively low rate of speed, the arm is disposed to'engage the lower ends of the plates, at which time the sparking action is retarded, while gradual .lifting of the arm will cause the brush to engage the contact plates at an earlier time, thus advancing the sparking action. The plates 63 are arranged Within the secondary circuit 61 and are connected by wires 64 which lead to the respec- .tive spark plugs 65. Six contact plates have been shown to correspond with the six ribs on the contact breaker, which is necessary when thedevice is intended for use in connection with a six cylinder engine. Of course, the number of contacts may vary according to the naturey of the engine on which the device is adapted for use.

In operation, the shaft20 is rotated when the engine is in operation, by the meshing gears 21 and 22, and the centrifugal :force of the shaft tends to throw the weighted arms 29 outward against the tension of the springs 34. As the arms move outward, the lower legs of the arms move upward which lifts the sleeve 27 by reason of the rollers 32 'passing over the inclined faces 31.` Vertical movement of the sleeve 27. changes the relative horizontal position of the ribs 41 on `the breaker mechanism with respect to the contact member 42, thus actuating the same at a different interval during the rotation of the breaker mechanism, thereb changin the time. of the impulses sent t rough the vprimary circuit. The distributor brush being iixedly connected to the member 40 also rises, thus changing its horizontal plane with respect to the side edges of the contact plates 63 which likewise changes the timing of the impulses sent through the secondary circuit. The impulses are changed in timed accord so that the engine may operate at its maximum eliciency at all times during the retarding and advancing of the spark. As the speed of the .engine increases, the spark will be corres ondlngly increased by .reason of the centriugal action set up by the governor control means 13. As the .speed of the engine decreases, the sleeve will gradually drop by reason of the action of the spring 59, at which time the weights 30 `will move nearer the axis of the sleeve.

-s'ame will o erate in a manner to assure maximum e ciency, as the sparking is automatically controlled by the speed ofthe engine.

The cap 15 is provided with a window 66 to allow lnspection of the distributor mechanism without removing the cap 15'. Also, the casing 14 may have a door 67 therein for permltting access to the governor .control mechanism. Y

While I have described whatl deem to be the most desirable embodiment of my invention, it is obvious that many of the details may be varied without in any way departing from the spirit of my invention, and I therefore dol not limit myself to the exact details of construction herein set forth nor to anything less than the whole of my invention.

What is claimed as new is vA timing device including a rotatable shaft having a squared extension, a second shaft having a square socket for slidin movement over said squared extension-an having a brush arm on the top thereof adapted to successively engage a plurality of contacts, brackets extending from said mentioned shaft, L-shaped arms pivotally mounted in said brackets, one end of said arms STEPHEN coYNE. 

